This replacement 220W UHP (Ultra High Performance) is a metal halide lamp manufactured by Philips provided to you by Christie. This lamp is user replaceable (following Christie's lamp replacement procedures located in the resources tab of this webpage or in the resources section of one of the projectors' webpage listed below) and will last up to 3000 hours (low power mode) . The benefits of using a UHP lamp in this Christie projector is that is allows for a smaller and lighter projector (because the power supply is smaller and lighter) a cooler running quieter and less expensive-to-operate projector (because of the lower wattage) and a longer lamp life (because the stresses on the lamp are reduced).